Oil-cup



(No Model.)

. B. J.-DOWNS.

OIL 'GUP.

I. v a

Patented Aug. 28, 1888.

0 "F. u: l I] II. wmwxgg J UNITED STATES PATENT @FHQE.

BENJAMIN J. DOWNS, OF SOMERVILLE, ASSIGNOR TO THE STAR BRASS OIL-CUP.

SPECIFICATION forming part of Letters Patent No. 388,767, dated August 28, 1888. Application filed April 2, 1888. Serial No. 269,258. (No model.)

To all whom it may concern.-

Be it known that I, BENJAMIN J. Downs, of Somerville, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Regulators for LubricatingOil Cups, of which the following, taken in connection with the accompanying drawings, is a specification.

The object of this invention is to furnish an oil-cup adapted to supply, drop by drop, to the bearing of a rotary shaft a limited and regular amount of lubricating-oil, and to provide for such apparatus an adjustable stop to control the opening of the valve, so that when once set correctly such step will limit the valve movement at the same point on successive days, and the valve may be repeatedly closed and opened again to the exact extent desired.

My invention is embodied in a cup having the construction herein set forth, and especially referred to in the appended claims.

In the drawings, Figure 1 is an elevation of my improved cup complete. Fig. 2 is a vertical section of the same. Fig. 3 represents the valve with its stop and sleeve, as hereinafter described.

A is the base of the cup; B, the glass body thereof, and O the cap. The base and cap have peripheral flanges,which inclose the ends of the body, and central tubular stems, a and a, threaded to engage with each other to hold them both against the ends of the cylindrical body B, with suitable interposed gaskets, D, of cork or other material. The glass bodyB and the base and cap thus united by screwing their stems together constitute the oilholding cup. The oil is supplied to the cup through an opening in the cap shown in Fig. 2.

he base A has a depending tubular extension, E, threaded at bottom to screw into the cap of the bearing to be lubricated, and preferably formed with an enlarged transverse opening, F, through it, to render visible the successive drops of oil descending through the nipple G,which constitutes the lower terminus of the stem a. The oil enters this stem through alateral oil-hole, H. Below this oil'inlet, and

above or within the nipple G, is the valvescat. The valve J is the conical termination of the valve-rod K,which rod has an enlarged threaded portion, L, engaging with an internal thread at the top of the stem a, so that retation of the valve-rod by turning its handwheel M will open or close the valve and let on or shut off the flow of oil.

Now, to enable the engineer,without special care and observatiomto insure a uniform flow day after day, I provide an adj ustable stop,P, serving to limit the opening movement at a given point. The central boss, 0, of the cap 0 is internally threaded to engage with the threaded portion Pof the stop 1, which sur' rounds the valve rod. This stop may be screwed more or less into the boss 0, and thus bring its lower end at any desired distance above the thread ed enlargement L on the valverod. The stop, being internally smooth to lit the cylindrical rod, will not turn with the valve, and hence when the valve rises a specified distance its movement will be checked by the stop P. Thus the opening ofthe valve will be controlled by the stop, and when it is desired to increase or diminish the oil-flow the stop may be adjusted accordingly.

I interpose between the stop P and the enlarged threaded portion L of the valve-rod a loose sleeve, S, surrounding the rod and forming a non-rotary extension of the stop. This sleeve, combined with the stop, constitutes a positive lock, preventing any possibility of turning the stop-nut by rotating the valve-rod or the valve by rotating the stop.

I claim as my invention- 1. The cup having a body, B, and the base and cap formed with the threaded tubular stems a and c, said base having the transverse opening F through it, and the nipple G therein to render the oil-feed visible, in combination with the valve having on its rod the threaded enlargement L, screwing within stem a, and with the threaded stop P, screwing into cap 0, substantially as set forth.

2. The base A,with tubular stem a, and depending extension E, with valve-nipple G at the bottom of said stem, and the cap 0, providcd with threaded central stem portion engaging with stema to hold the body B in poto this specificationfin the presence of two subsition, in combination with the valve-rod J K scribing witnesses, on this 29th day of March, L M, the adjustable stop P, engaging with the A. D. 1888.

cap 0, and the sleeve S, interposed between BENJAMIN J. DOWNS. 5 the stop and the part L of the rod, substan \Vitnesses:

tially as set forth. A. H. SPENCER,

In testimony whereofI have signed my name ELIHU G. LooMIs. 

